Optimization of the Al-recycling Process for Low Grade Scraps

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• 作者：Dipl.-Ing. Dr. mont. Armin Pirker…
• 关键词：Aluminium recycling ; Organic load ; Rotary drum furnace ; Salt slag ; Aluminiumrecycling ; Organische Schrottbestandteile ; Drehtrommelofen ; Salzschlacke
• 刊名：BHM Berg- und H篓鹿ttenm?nnische Monatshefte
• 出版年：2015
• 出版时间：July 2015
• 年：2015
• 卷：160
• 期：7
• 页码：320-327
• 全文大小：1,003 KB
• 参考文献：1.Milke, E.; Friedrich, B.; Sydykov, A.; Arnold, A.: Solubility of CaF2 in NaCl-KCl salt flux for Al-recycling and its effect on Al-loss, Proceedings of EMC, 2005, pp?1537-548
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  4.Sydykov, A.: Eigenschaften und Ausbeute von NaCl/KCl-basierten Schmelzsalzen des Al-Recyclings, Diss., Aachen, RWTH Aachen, 2004
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  6.Bolivar, R. L.; Friedrich, B.: The Influence of Increased NaCl:KCl Ration on Metal Yield in Salt Bath Smelting Processes for Aluminium Recycling, World of Metallurgy—ERZMETALL, 62 (2009), No. 6, pp?366-71
  7.Bolivar, R.; Friedrich, B.: The influence of increased NaCl:KCl ration on Metal Yield in salt bath smelting for aluminium recycling, http://?www.?metallurgie.?rwth-aachen.?de/?new/?images/?pages/?publikationen/?aluminium_?recyc_?id_-315.?pdf (14.10.2013)
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  13.Tenorio, J.; Delago, F.: Optimization of salt composition in the recycling of aluminium cans, in: Huglen, R. (ed.) Proceeding of the technical session presented by TMS Aluminium Committee at the 126th TMS Annual Meeting, Orlando, Florida, USA, 1997, pp?1105-108
  14.Hebenstreit, R.; Antrekowitsch, H.; Galovsky, U.; Kaufmann, H.: Analytik und Behandlung von Magnesiumkr?tzen aus der Sekund?rmetallurgie, Giesserei-Praxis, 12 (2004), pp?449-54
  
• 作者单位：Dipl.-Ing. Dr. mont. Armin Pirker (1)
  Helmut Antrekowitsch (1)
  Werner Fragner (2)
  Helmut Suppan (2)
  Michael Kettner (2)
  
  1. Lehrstuhl für Nichteisenmetallurgie, Montanuniversit?t Leoben, Franz-Josef-Stra?e 18, 8700, Leoben, Austria
  2. AMAG-Casting-GmbH, Lambrechtshausnerstr. 61, 5282, Ranshofen, Austria
  
• 刊物类别：Engineering
• 刊物主题：Earth sciences
  Mineral Resources
  
• 出版者：Springer Wien
• ISSN：1613-7531

文摘

From the metallurgical point of view, the recycling of scrap under a molten flux is a complex topic. Apart from the simple solid-liquid phase transformation of the input materials, there are physical and chemical reactions of the feedstock with the salt slag and the furnace atmosphere. In the industrial process, there are many non-controllable factors, and the technical effort to evaluate relevant variables, for example the oxidation of the metal during the process, is very high. Due to these reasons, the most common way to study the ongoing mechanism during the melting process are lab-scale experiments to investigate the influence of the different parameters on the process. In addition to a theoretical approach of the effects of some parameters which are easy to control in reality like the amount of KCl in the flux and the salt amount, the aim of this work is to present melting results under production-related conditions (rotary drum furnace with a capacity up to 160?kg) for these variables. The investigations are concentrated on the quantification of the recovery parameters of the metal as well as on the definition of optimal settings for the industrial recycling process.